Foamed concrete lifting and widening embankment for highway reconstruction and expansion without interrupting traffic and construction method thereof

Abstract

This invention relates to a method for constructing elevated and widened embankments using foamed concrete without disrupting traffic during highway reconstruction and expansion. The method includes: component customization and traffic diversion; pre-drilling of steel pipe piles; steel pipe pile construction; construction of standardized auxiliary installation supports; construction of precast retaining walls; construction of an integrated blind drainage system; construction of precast assembled foundation slabs; construction of precast protective panels; construction of widened and filled foamed concrete embankments; construction of standardized cantilever slabs; guardrail construction; and widening of the roadbed on the other side. This invention employs a method for constructing elevated and widened embankments using foamed concrete without disrupting traffic during highway reconstruction and expansion. By drilling holes in the original roadbed to insert steel pipe piles and installing standardized supports to assist with precast retaining walls, highway reconstruction and expansion projects can be completed without interrupting traffic, providing convenience for urban traffic development and possessing broad application prospects.

Description

Technical Field

[0001] This invention relates to the construction method of raising and widening embankments with foamed concrete for highway reconstruction and expansion without interrupting traffic. It belongs to the field of civil engineering and is applicable to the construction of raising and widening embankments with foamed concrete for highway reconstruction and expansion without interrupting traffic. Background Technology

[0002] Road transportation plays a vital role in modern society; however, to accommodate the increasing traffic volume and the needs of urban development, the reconstruction and expansion of existing roads is inevitable. However, traditional road reconstruction and expansion typically requires traffic disruption, causing inconvenience to road users and surrounding residents. Therefore, finding a reconstruction and expansion method that does not disrupt traffic has become an urgent priority. Foamed concrete, as a lightweight material, possesses excellent thermal insulation, sound insulation, and seismic resistance properties, and is widely used in roadbed and embankment engineering. Against this backdrop, exploring methods for raising and widening embankments using foamed concrete has become a forward-looking research task.

[0003] The technical principle of using foamed concrete to raise and widen embankments is based on the material's lightweight properties and excellent mechanical performance. Firstly, by injecting foamed concrete into the bottom of the embankment, its weight is effectively reduced, thus decreasing the bearing pressure on the foundation. Secondly, foamed concrete has good compressive strength, effectively supporting the road surface load. This method not only maintains the stability of the embankment during reconstruction and expansion but also improves its load-bearing capacity, meeting the demands of higher traffic volumes. During construction, a segmented construction method can be adopted to ensure continuous traffic flow.

[0004] Implementing the construction method of raising and widening embankments using foamed concrete requires a series of scientifically sound steps. First, a detailed survey and design of the embankment is conducted to determine the construction plan. Then, specialized equipment is used to inject foamed concrete into the base of the embankment, gradually increasing its height. During the injection process, the stability of the embankment needs to be monitored to ensure it does not pose a danger to traffic. Finally, after the foamed concrete has solidified, the road surface can be repaved and reconstructed to meet new traffic demands. Through this scientifically sound construction method, highway reconstruction and widening projects can be completed without disrupting traffic, facilitating urban transportation development.

[0005] While the method of upgrading and widening highways using foamed concrete to raise and widen embankments without disrupting traffic has many advantages, several technical challenges remain. Firstly, to ensure the safety of road users and construction workers during highway upgrading and widening without disrupting traffic, effective traffic management plans are necessary. Secondly, the potential impact of noise and vibration during construction on surrounding residents needs to be considered, and appropriate vibration reduction and sound insulation measures must be implemented. Thirdly, the construction cost and benefits of using foamed concrete for embankment raising and widening are also factors that need to be considered. Researching how to reduce costs and improve construction efficiency while ensuring project quality is crucial for resolving these technical challenges. Summary of the Invention

[0006] The purpose of this application is to address the aforementioned problems in the existing technology by providing a method for constructing elevated and widened embankments using foamed concrete without interrupting traffic during highway reconstruction and expansion. By drilling holes in the original roadbed to insert steel pipe piles and setting up standardized supports to assist in the construction of prefabricated retaining walls, highway reconstruction and expansion projects can be completed without interrupting traffic, thus facilitating urban traffic development.

[0007] To achieve the above-mentioned objectives, this application adopts the following technical solution: A method for constructing a highway reconstruction and expansion embankment using foamed concrete to raise and widen the embankment without interrupting traffic includes the following steps:

[0008] S00, Component Customization and Traffic Diversion:

[0009] Custom-made prefabricated foundation slabs, prefabricated protective panels, horizontal pipes, vertical pipes, longitudinal long pipes, prefabricated baffles with clips, and transverse pipes were manufactured in the factory; at the same time, half-width traffic diversion construction was carried out at the original roadbed central median.

[0010] S10, steel pipe pile pilot hole:

[0011] Piling holes were constructed on top of the original roadbed at the central median.

[0012] S20, Steel Pipe Pile Construction:

[0013] The steel pipe piles were hoisted into the pile holes one by one using a crane. At the same time, diagonal bracing was constructed on the outside of the steel pipe piles so that the bottom of the diagonal bracing was supported on the original roadbed.

[0014] S30, Standardized auxiliary installation bracket construction:

[0015] A standardized auxiliary installation bracket is assembled on the top of the original roadbed on the construction side. This standardized auxiliary installation bracket is used to assist in the installation of precast baffles.

[0016] S40, Precast retaining wall construction:

[0017] The precast retaining wall is hoisted onto the inner side of the steel pipe pile using a crane. Then, the precast retaining wall is secured using the inverted U-shaped fasteners on the outer side of the precast retaining wall. Next, a cable is installed on the inner side of the precast retaining wall, and the other end of the cable is anchored in the original roadbed.

[0018] S50, Construction of Integrated Blind Pipe Drainage System:

[0019] Install an integrated blind pipe drainage system at the roadbed steps;

[0020] S60, Construction of prefabricated assembled foundation slab:

[0021] Insert the reinforcing bars of the precast protective panel into the pre-drilled holes on the outer side of the bottom of the roadbed step;

[0022] When the original roadbed at the splicing point is being constructed near water, a steel frame is constructed on the outer side of the prefabricated assembled foundation slab, and the gabion stone cages are placed in the steel frame support groove.

[0023] Among them, the bottom sides of the precast protective panel and the precast assembled foundation slab are respectively provided with reserved holes for the protective panel and reserved holes for the foundation slab.

[0024] S70, Precast Protective Panel Construction:

[0025] Precast protective panels are installed on the outer side of the precast assembled foundation slab, and anchor cables are installed on the inner side of the precast protective panels. The other end of the anchor cables is anchored to the original roadbed.

[0026] S80, Foamed Concrete Embankment Widening and Filling Construction:

[0027] Foamed concrete embankment was constructed on the original roadbed between the precast protective panels and the precast retaining walls.

[0028] S90, Standardized Cantilever Slab Construction:

[0029] The steel pipe piles are inserted through the steel pipe pile insertion holes at the top of the standardized cantilever slab and secured with fixing bolts; at the same time, the bottom of the inverted L-shaped drainage pipe is inserted into the blind ditch drainage guide channel.

[0030] Among them, the edge of the fixed cantilever slab is provided with a drainage channel, and the bottom of the drainage channel is provided with a drainage channel water pipe hole;

[0031] S100, Guardrail Construction:

[0032] Install guardrail bases on top of the standardized cantilever slab, and then construct the guardrails.

[0033] S110, roadbed widening construction on the other side:

[0034] Traffic was diverted to the widened foamed concrete embankment, and then steps S50-S100 were repeated to widen the roadbed on the other side.

[0035] Further, in step S30, the support base is placed in the designated position, and then a telescopic strut is installed on the top of the lifting column, and an inverted U-shaped fastener is installed at the end of the telescopic strut;

[0036] The support base is equipped with an adjusting jack at the top, a lifting column at the top of the adjusting jack, a telescopic jack on the side of the top of the lifting column, a telescopic support rod connected to the telescopic jack, and the end of the telescopic support rod connected to the inner side of the inverted U-shaped fastener.

[0037] In this way, this step effectively solved the problems of precise positioning, stable support, and convenient installation of precast retaining panels during the construction of raised and widened embankments with foamed concrete without interrupting traffic, thereby promoting the overall progress and quality of the reconstruction and expansion project.

[0038] Further, in step S40, the semi-circular clip is placed on the side of the steel pipe pile, the telescopic jack and the adjusting jack are activated to adjust the inverted U-shaped fastener to the appropriate position, and then the inverted U-shaped fastener is clamped on the top of the precast baffle, and then the cable construction is carried out on the outer side of the precast baffle.

[0039] Thus, the technical measures in this step can ensure that the precast retaining plate is quickly and accurately positioned during construction and is closely integrated with the overall embankment structure, providing a solid foundation for subsequent foamed concrete filling construction, thereby ensuring the quality and safety performance of the highway reconstruction and expansion project.

[0040] Furthermore, in step S50, the horizontal pipe is connected to the center of the side of the horizontal pipe in sequence, one end of the horizontal pipe is connected to the center of the side of the vertical pipe, one end of the horizontal pipe is connected to the end of the vertical pipe, and the end of the longitudinal long pipe is connected to the end of the outermost vertical pipe. At the same time, the longitudinal long pipe is passed through the reserved holes in the protective panel and the reserved holes in the foundation plate in sequence.

[0041] Thus, this series of pipeline connection steps is to solve the drainage problems encountered in highway reconstruction and expansion, protect the newly widened embankment from water erosion, maintain good operating conditions, and improve the efficiency of construction organization and project quality.

[0042] Furthermore, the original roadbed horizontal holes and the original roadbed vertical holes are sequentially provided below the roadbed steps, and the horizontal pipe and the vertical pipe are sequentially installed in the original roadbed horizontal holes and the original roadbed vertical holes.

[0043] Thus, the design effectively solved the drainage problem during the reconstruction and expansion of the embankment, enhanced the durability and stability of the embankment structure, and improved the overall quality and service life of the project.

[0044] Furthermore, when the original roadbed encounters a river, a steel frame is provided on the outer side of the prefabricated assembled foundation slab, a support groove is provided on the top of the steel frame, and a cast-in-place pile is provided at the bottom of the steel frame, with gabion stones placed in the support groove.

[0045] Thus, this design scheme not only ensures the quality and safety of the highway reconstruction and expansion project, but also embodies the construction concepts of green, environmental protection and sustainability.

[0046] Furthermore, the standardized cantilever slab is provided with a pre-drilled hole, and an inverted L-shaped drainage pipe is installed in the pre-drilled hole. The top of the pre-drilled hole is connected to the water pipe hole of the drainage channel, and the bottom of the inverted L-shaped drainage pipe is located in the drainage channel of the blind ditch.

[0047] Thus, this design provides an efficient, safe, and easy-to-maintain drainage solution for highway reconstruction and expansion projects, further ensuring the overall project quality and service life.

[0048] Furthermore, a guardrail base is provided at the bottom of the guardrail, and a guardrail handrail is provided at the top of the guardrail. The guardrail base is located above the standardized cantilever slab.

[0049] Thus, the design effectively improves the overall safety and practicality of the highway reconstruction and expansion project, while also reflecting good engineering aesthetics and construction rationality.

[0050] The embankment was raised and widened using foamed concrete to ensure uninterrupted traffic flow during highway reconstruction and expansion. This was achieved through the aforementioned construction method for raising and widening the embankment using foamed concrete.

[0051] Compared with the prior art, the present invention also has the following outstanding advantages and significant effects:

[0052] 1. The prefabricated baffle with clips in this invention has an ingenious structural design. It uses the semi-circular clips on the side of the baffle to achieve rapid positioning and fastening, which greatly improves construction efficiency and makes it feasible to widen the embankment during the road reconstruction and expansion process without interrupting traffic.

[0053] 2. This invention uses standardized cantilever slabs for rapid installation of guardrails. By setting up drainage channels and inverted L-shaped drainage pipes, rainwater in the raised and widened roadbed can be quickly drained, ensuring the stability of the roadbed.

[0054] 3. The scour prevention technology of cast-in-place piles and steel frame gabion cages used in this invention for water-adjacent road sections utilizes the support groove of the steel frame to achieve rapid stacking and stabilization of gabion cages, thereby improving the scour prevention capability of the roadbed in temporary water-adjacent road sections.

[0055] 4. This invention adopts a standardized auxiliary installation prefabricated baffle support structure, which is simple in structure and can achieve rapid positioning. The inverted U-shaped fasteners are quickly adjusted by jacks to stabilize the prefabricated baffle, which greatly improves construction efficiency and construction safety.

[0056] 5. This invention adopts an integrated blind pipe drainage system, which solves the problem of blocked drainage holes and inability to drain water in traditional drainage construction by connecting the drainage pipes at the roadbed in a longitudinal, transverse and vertical manner, thereby improving the stability of the roadbed soil. Attached Figure Description

[0057] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ;

[0058] Figure 2 This is a schematic diagram of the elevation of the invention. Figure 1 ;

[0059] Figure 3 This is a three-dimensional illustration of the present invention. Figure 2 ;

[0060] Figure 4 This is a schematic diagram of the elevation of the invention. Figure 2 ;

[0061] Figure 5 It is a three-dimensional schematic diagram of the construction of precast retaining walls in the roadbed using steel sheet piles and standardized supports.

[0062] Figure 6 This is an elevation view of the construction of precast retaining walls using sheet piles and standardized supports in the roadbed.

[0063] Figure 7 This is a three-dimensional schematic diagram of the roadbed pilot hole;

[0064] Figure 8 This is a three-dimensional schematic diagram of a standardized auxiliary installation prefabricated baffle support structure;

[0065] Figure 9 It is a three-dimensional schematic diagram of standardized guardrail construction;

[0066] Figure 10 This is a three-dimensional schematic diagram of a standardized cantilever slab;

[0067] Figure 11 This is a three-dimensional schematic diagram of a prefabricated assembled foundation slab;

[0068] Figure 12 This is a three-dimensional schematic diagram of an inverted L-shaped drain pipe;

[0069] Figure 13 This is a three-dimensional schematic diagram of an integrated blind pipe drainage system.

[0070] In the diagram, 1. Roadbed steps; 2. Original roadbed; 3. Pile holes; 4. Diagonal bracing; 5. Blind drain drainage channel; 6. Semi-circular bracket; 7. Steel pipe pile; 8. Inverted U-shaped fastener; 9. Telescopic strut; 10. Telescopic jack; 11. Precast baffle; 12. Cable; 13. Lifting column; 14. Adjusting jack; 15. Support base; 16. Inverted L-shaped drainage pipe; 17. Standardized cantilever slab; 18. Fixing bolt; 19. Guardrail handrail; 20. Guardrail; 21. Drainage channel; 22. Guardrail base; 23. Anchor cable; 24. Precast protective panel; 25. Precast 26. Prefabricated foundation slab; 27. Supporting trench; 28. Steel frame; 29. ​​Cast-in-place pile; 30. Foamed concrete embankment; 31. Gabion stone cage; 32. Pre-reserved hole for standardized cantilever slab; 33. Water pipe hole for drainage channel; 34. Pre-reserved hole for protective panel; 35. Pre-reserved hole for foundation slab; 36. Rebar insertion; 37. Pre-reserved hole for rebar insertion; 38. Horizontal hole for original roadbed; 39. Vertical hole for original roadbed; 40. Horizontal pipe; 41. Vertical pipe; 42. Steel pipe pile insertion hole; 43. Integrated blind pipe drainage system; 44. Long longitudinal pipe; 45. Transverse pipe; 46. Standardized auxiliary installation bracket. Detailed Implementation

[0071] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0072] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0073] Example 1

[0074] like Figure 1-13 As shown, the construction method for raising and widening the embankment with foamed concrete without interrupting traffic during the reconstruction and expansion of this highway includes the following steps:

[0075] S00, Component Customization and Traffic Diversion:

[0076] The factory will customize prefabricated foundation slab 25, prefabricated protective panel 24, horizontal pipe 39, vertical pipe 40, longitudinal long pipe 43, prefabricated baffle 11 with clips and transverse pipe 44; at the same time, half-width traffic diversion construction will be carried out at the central median of the original roadbed 2.

[0077] S10, steel pipe pile 7 pilot hole:

[0078] Piling holes 3 are constructed on the top of the original roadbed 2 at the central median.

[0079] Construction of S20 steel pipe pile 7:

[0080] Using a crane, the steel pipe piles 7 are hoisted into the pile hole 3 one by one. At the same time, the diagonal bracing 4 is constructed on the outside of the steel pipe piles 7, so that the bottom of the diagonal bracing 4 is supported on the original roadbed 2.

[0081] The shaped cantilever slab 17 is provided with a shaped cantilever slab reserved hole 31, and the inverted L-shaped drainage pipe 16 is installed in the shaped cantilever slab reserved hole 31. The top of the shaped cantilever slab reserved hole 31 is connected to the water pipe hole 32 of the drainage channel, and the bottom of the inverted L-shaped drainage pipe 16 is located in the blind ditch drainage guide channel 5.

[0082] S30, Standardized Auxiliary Installation Bracket 45 Construction:

[0083] A standardized auxiliary installation bracket 45 is assembled on the top of the original roadbed 2 on the construction side. This standardized auxiliary installation bracket 45 is used to assist in the installation of the precast baffle 11.

[0084] The support base 15 is placed in a designated position, and then a telescopic support rod 9 is installed on the top of the lifting column 13. An inverted U-shaped fastener 8 is installed at the end of the telescopic support rod 9. The support base 15 is equipped with an adjusting jack 14 on top, the lifting column 13 is located on the top of the adjusting jack 14, and a telescopic jack 10 is located on the side of the top of the lifting column 13. The telescopic jack 10 is connected to the telescopic support rod 9, and the end of the telescopic support rod 9 is connected to the inner side of the inverted U-shaped fastener 8.

[0085] In step S30, by placing the support base 15 in the designated position and installing an adjustable support structure consisting of an adjusting jack 14, a lifting column 13, a telescopic jack 10, and a telescopic strut 9 on it, the structure has the following effect:

[0086] Precise positioning and height adjustment: The support base 15 ensures that the entire auxiliary support structure is stably placed in the required position. The adjustable jack 14 allows for flexible fine-tuning of the height of the support base 15 to adapt to different construction conditions and requirements.

[0087] Dynamic support and load-bearing capacity: The telescopic jack 10 at the top of the lifting column 13 enables the telescopic strut 9 to be precisely adjusted in height according to the installation progress of the prefabricated baffle 11, so as to provide sufficient support force and ensure the stability and safety of the prefabricated baffle 11 during the hoisting process.

[0088] Securement function: The end of the telescopic strut 9 is connected to the inverted U-shaped fastener 8. This design makes it easy to firmly and quickly fix the prefabricated baffle 11 in the predetermined position, which not only simplifies the installation process, but also enhances the overall rigidity and stability of the baffle after installation.

[0089] Improved construction flexibility and efficiency: Thanks to its scalable and adjustable design, the system can better meet the construction needs under different working conditions, improving the ease of operation and work efficiency during the construction process.

[0090] Construction of S40 and precast baffle 11:

[0091] The precast retaining plate 11 is hoisted onto the inner side of the steel pipe pile 7 using a crane. Then, the precast retaining plate 11 is secured using the inverted U-shaped fasteners 8 on its outer side. Next, the cable 12 is installed on the inner side of the precast retaining plate 11, with the other end anchored to the original roadbed 2. A semi-circular clamp 6 is then fitted onto the side of the steel pipe pile 7. The telescopic jack 10 and adjusting jack 14 are used to adjust the inverted U-shaped fastener 8 to the appropriate position. The inverted U-shaped fastener 8 is then secured to the top of the precast retaining plate 11. Finally, the cable 12 is installed on the outer side of the precast retaining plate 11. The semi-circular clamp 6 has an arc-shaped design that linearly matches the side of the steel pipe pile 7.

[0092] The construction method employing a combination of a semi-circular clamp 6, a telescopic jack 10, and an adjusting jack 14 has the following significant effects:

[0093] Precise positioning and fixing: By fitting the semi-circular clip 6 onto the side of the steel pipe pile 7, the position of the precast baffle 11 can be precisely pre-positioned. With the help of the linkage of the telescopic jack 10 and the adjusting jack 14, the inverted U-shaped fastener 8 is accurately adjusted to the predetermined position, ensuring that the connection between the precast baffle 11 and the steel pipe pile 7 is tight and stable during installation.

[0094] Efficient installation and enhanced safety: Using mechanical force (telescopic jack 10) to adjust the inverted U-shaped fastener 8 not only greatly improves the work efficiency of installing the prefabricated baffle 11, but also reduces the safety risks that may be caused by manual operation, thus enhancing the safety of the construction site.

[0095] Improved structural stability: After the inverted U-shaped fastener 8 is firmly fastened to the top of the precast retaining plate 11, combined with the construction of the cable 12, the road load can be effectively transferred and distributed, so that a stable force system is formed between the precast retaining plate 11 and the foamed concrete embankment 29, thereby improving the bearing capacity and deformation resistance of the entire widened embankment structure.

[0096] S50, Integrated blind pipe drainage system 42 construction:

[0097] An integrated blind pipe drainage system 42 is installed at the roadbed step 1. The horizontal pipe 44 is connected to the center of the side of the horizontal pipe 39 in sequence. One end of the horizontal pipe 39 is connected to the center of the side of the vertical pipe 40. One end of the horizontal pipe 39 is connected to the end of the vertical pipe 40. The end of the longitudinal long pipe 43 is connected to the end of the outermost vertical pipe 40. At the same time, the longitudinal long pipe 43 is passed through the reserved hole 33 of the protective panel and the reserved hole 34 of the foundation plate in sequence. The original roadbed horizontal hole 37 and the original roadbed vertical hole 38 are provided in sequence below the roadbed step 1. The horizontal pipe 39 and the vertical pipe 40 are arranged in the original roadbed horizontal hole 37 and the original roadbed vertical hole 38 in sequence.

[0098] In this embodiment, the pipe connection method and arrangement have the following effects:

[0099] Drainage system construction: A complete underground drainage system is formed through the orderly connection of transverse pipes 44, horizontal pipes 39, vertical pipes 40, and longitudinal long pipes 43. This structure can ensure that water accumulated inside the roadbed and groundwater can be effectively drained, preventing water accumulation from damaging the widened foamed concrete embankment 29 and ensuring the stability and durability of the embankment.

[0100] Structural synergy: The pipes pass through the pre-reserved holes 24 in the precast retaining panel and 34 in the foundation slab, meaning that the drainage system is tightly integrated with the main embankment structure. This allows the pipes to be embedded in the foamed concrete without affecting the overall structural strength, while ensuring the normal use and maintenance of the drainage system.

[0101] Improved drainage efficiency: By rationally laying out drainage pipes in multiple directions, it is possible to effectively collect and quickly discharge water from different areas, reduce water retention time, and reduce foundation softening or frost heave caused by water infiltration, thereby improving the safety performance and service life of the entire embankment project.

[0102] Construction convenience: The pre-designed pipeline connection sequence and position simplify the on-site construction process, making the installation process more standardized and regulated, reducing construction difficulty, and saving time and costs.

[0103] S60, Construction of prefabricated assembled foundation slab 25:

[0104] Insert the reinforcing bars 35 of the precast protective panel 24 into the reinforcing bar reserved holes 36 on the outer side of the bottom of the roadbed step 1;

[0105] When the original roadbed 2 at the splicing point is being constructed near water, a steel frame 27 is constructed on the outer side of the prefabricated assembled foundation slab 25, and the gabion 30 is placed in the support groove 26 of the steel frame 27.

[0106] Among them, the bottom sides of the prefabricated protective panel 24 and the prefabricated assembled foundation plate 25 are respectively provided with protective panel reserved holes 33 and foundation plate reserved holes 34.

[0107] In step S50, horizontal holes 37 and vertical holes 38 of the original roadbed are set below the roadbed step 1, and horizontal pipes 39 and vertical pipes 40 are placed in these holes in sequence, which has the following effect:

[0108] Optimized drainage system layout: The arrangement of horizontal pipes 39 and vertical pipes 40 forms a three-dimensional drainage network. Horizontal pipes 39 are primarily responsible for collecting and guiding lateral water flow from the surface or within the embankment, while vertical pipes 40 rapidly discharge water downwards. This layout effectively improves drainage efficiency throughout the embankment area, preventing prolonged water retention from impacting embankment stability.

[0109] Protecting the embankment structure: By pre-reserving holes and installing drainage pipes in the original roadbed 2, it can be ensured that the drainage facilities will not be damaged during the foam concrete filling process due to construction operations. At the same time, it can also ensure that the foam concrete is in close contact with the drainage pipes, thereby enhancing the integrity and waterproof performance of the embankment.

[0110] Reduce foundation damage: Timely drainage of accumulated water inside and around the embankment can lower the groundwater level, reduce the softening effect of water on the foundation soil, thereby maintaining the stability and bearing capacity of the embankment foundation and extending the service life of the road.

[0111] Easy to maintain: The pre-planned and built-in drainage system makes it easier to maintain and repair later. The drainage facilities can be inspected and maintained without large-scale road excavation, which greatly reduces maintenance costs and the impact on road traffic.

[0112] Preferably, when the original roadbed 2 encounters a river, a steel frame 27 is provided on the outer side of the prefabricated assembled foundation plate 25, a support groove 26 is provided on the top of the steel frame 27, a cast-in-place pile 28 is provided at the bottom of the steel frame 27, and a gabion 30 is placed in the support groove 26.

[0113] S70, precast protective panel 24 construction:

[0114] Precast protective panels 24 are constructed on the outer side of the precast assembled foundation slab 25, and anchor cables 23 are constructed on the inner side of the precast protective panels 24. The other end of the anchor cables 23 is anchored to the original roadbed 2.

[0115] S80, Foamed Concrete Embankment 29 Widening and Filling Construction:

[0116] Foamed concrete embankment 29 is constructed on the original roadbed 2 between the precast protective panel 24 and the precast baffle 11.

[0117] Construction of S90, Standardized Cantilever Slab 17:

[0118] The steel pipe pile 7 is passed through the steel pipe pile insertion hole 41 at the top of the fixed cantilever plate 17 and secured with fixing bolts 18; at the same time, the bottom of the inverted L-shaped drainage pipe 16 is inserted into the blind ditch drainage guide channel 5.

[0119] Among them, the edge of the fixed cantilever slab 17 is provided with a drainage groove 21, and the bottom of the drainage groove 21 is provided with a drainage groove water pipe hole 32;

[0120] S100, guardrail 20 construction:

[0121] Install guardrail base 22 on top of the fixed cantilever slab 17, and then construct guardrail 20;

[0122] The guardrail 20 has a guardrail base 22 at the bottom and a guardrail handrail 19 at the top. The guardrail base 22 is located above the fixed cantilever slab 17.

[0123] S110, roadbed widening construction on the other side:

[0124] Traffic is diverted to the widened foamed concrete embankment 29, and then steps S50-S100 are repeated to widen the roadbed on the other side.

[0125] Example 2

[0126] The embankment was raised and widened using foamed concrete to ensure uninterrupted traffic flow during highway reconstruction and expansion, as described in Example 1.

[0127] Example 3

[0128] like Figure 1-13 As shown, the construction structure for raising and widening the embankment with foamed concrete without interrupting traffic in this highway reconstruction and expansion project includes a temporary fence supporting steel pipe pile frame, a prefabricated baffle 11 with a clip, a standardized cantilever slab 17, a guardrail base 22, a standardized auxiliary installation bracket 45, an integrated blind pipe drainage system 42, and a prefabricated assembled foundation slab 25.

[0129] The temporary enclosure supports the steel pipe pile frame set on the original roadbed 2 at the central divider, including the diagonal brace 4 and the steel pipe pile 7. The steel pipe pile 7 is provided with the diagonal brace 4 on its side, and the bottom of the diagonal brace 4 is supported on the original roadbed 2.

[0130] Among them, a pile hole 3 is provided at the central divider at the top of the original roadbed 2, and a steel pipe pile 7 is inserted into the pile hole 3. A blind ditch drainage channel 5 is provided at the bottom of the original roadbed 2 at the top of the steel pipe pile 7. The top of the steel pipe pile 7 passes through the steel pipe pile insertion hole 41 and is secured with a fixing bolt 18. A semi-circular clip 6 is fitted on the side of the steel pipe pile 7, and an inverted U-shaped clip 8 is clipped on the top of the precast baffle 11. The original roadbed horizontal hole 37 and the original roadbed vertical hole 38 are provided in sequence below the roadbed step 1. The horizontal pipe 39 and the vertical pipe 40 are arranged in sequence in the original roadbed horizontal hole 37 and the original roadbed vertical hole 38.

[0131] Preferably, the fixed cantilever slab 17 is provided with a fixed cantilever slab reserved hole 31, and the inverted L-shaped drainage pipe 16 is installed in the fixed cantilever slab reserved hole 31. The top of the fixed cantilever slab reserved hole 31 is connected to the water pipe hole 32 of the drainage channel, and the bottom of the inverted L-shaped drainage pipe 16 is located in the blind ditch drainage guide channel 5.

[0132] The precast baffle 11 is set inside the steel pipe pile 7 and includes a semi-circular bracket 6, the precast baffle 11, and a cable 12. The outer side of the precast baffle 11 is provided with the semi-circular bracket 6, and the inner side of the precast baffle 11 is provided with the cable 12. The other end of the cable 12 is anchored in the original roadbed 2. The semi-circular bracket 6 is designed with an arc shape, which linearly matches the side of the steel pipe pile 7.

[0133] The standardized cantilever slab 17 is set on top of the steel pipe pile 7 and the precast baffle 11, including the standardized cantilever slab 17, the diversion channel 21, the water pipe hole 32 of the diversion channel, and the steel pipe pile insertion hole 41. The top of the standardized cantilever slab 17 is provided with the steel pipe pile insertion hole 41, the edge of the standardized cantilever slab 17 is provided with the diversion channel 21, and the water pipe hole 32 of the diversion channel is located at the bottom of the diversion channel 21.

[0134] The guardrail base 22 is located above the fixed cantilever slab 17, and a guardrail 20 is provided on the top of the guardrail base 22. A guardrail handrail 19 is provided on the top of the guardrail 20.

[0135] An integrated blind pipe drainage system 42 is installed at the roadbed step 1, including a horizontal pipe 39, a vertical pipe 40, a longitudinal long pipe 43, and a transverse pipe 44. The transverse pipe 44 is connected to the center of the side of the horizontal pipe 39 in sequence. One end of the horizontal pipe 39 is connected to the center of the side of the vertical pipe 40. One end of the horizontal pipe 39 is connected to the end of the vertical pipe 40. The end of the longitudinal long pipe 43 is connected to the end of the outermost vertical pipe 40.

[0136] The standardized auxiliary installation bracket 45 is used to assist in the installation of the prefabricated baffle 11 with a clip. It is placed on the top of the original roadbed 2 on the construction side. It includes an inverted U-shaped fastener 8, a telescopic strut 9, a telescopic jack 10, a prefabricated baffle 11, a lifting column 13, an adjusting jack 14, and a support base 15. The top of the support base 15 is equipped with an adjusting jack 14, the top of the adjusting jack 14 is equipped with a lifting column 13, the top side of the lifting column 13 is equipped with a telescopic jack 10, the telescopic jack 10 is connected to the telescopic strut 9, and the end of the telescopic strut 9 is connected to the inner side of the inverted U-shaped fastener 8.

[0137] The prefabricated foundation slab 25 is located on the bottom outer side of the roadbed step 1, and the outer side of the prefabricated foundation slab 25 is provided with a prefabricated protective panel 24.

[0138] The precast protective panel 24 has an anchor cable 23 on its inner side, with the other end of the anchor cable 23 anchored to the original roadbed 2. A foamed concrete embankment 29 is provided on the top of the original roadbed 2 between the precast baffle 11 and the precast protective panel 24. The inner side of the precast protective panel 24 is provided with a reinforcing bar 35, which is inserted into the reinforcing bar reserved hole 36 on the bottom outer side of the roadbed step 1. The bottom sides of the precast protective panel 24 and the precast assembled foundation plate 25 are respectively provided with a protective panel reserved hole 33 and a foundation plate reserved hole 34. The longitudinal long pipe 43 passes through the protective panel reserved hole 33 and the foundation plate reserved hole 34 in sequence.

[0139] Preferably, when the original roadbed 2 encounters a river, a steel frame 27 is provided on the outer side of the prefabricated assembled foundation plate 25, a support groove 26 is provided on the top of the steel frame 27, a cast-in-place pile 28 is provided at the bottom of the steel frame 27, and a gabion 30 is placed in the support groove 26.

[0140] Thus, the technical contributions and effects of this invention can be mainly reflected in the following aspects:

[0141] 1. Innovative construction method: This invention provides a method for raising and widening embankments with foamed concrete without interrupting traffic. By drilling holes in the original roadbed 2 to insert steel pipe piles 7, and using standardized supports to assist in the installation of prefabricated baffles 11, the problem of traffic interruption during traditional reconstruction and expansion is effectively solved, greatly reducing the impact on public travel.

[0142] 2. Highly efficient and stable structural design: The steel pipe piles 7 provide support, and the precast retaining walls 11, combined with the cables 12 and anchor cables 23, enhance the stability of the widened embankment, ensuring safety and reliability during construction. Simultaneously, the integrated blind drainage system 42 effectively solves embankment drainage problems and prevents embankment defects.

[0143] Application of prefabricated assembly construction technology: The use of factory-customized prefabricated protective panels 24, prefabricated assembly foundation slabs 25 and other components improves construction efficiency, shortens the construction period, and helps ensure the consistency and standardization of project quality.

[0144] 3. Optimization of foamed concrete application: Taking advantage of the lightweight and good mechanical properties of foamed concrete, the existing embankment was widened and raised without affecting its stability, thus meeting the demand for increased traffic flow.

[0145] 4. Balancing environmental protection and economic benefits: Vibration reduction and sound insulation measures were fully considered during construction to reduce the impact on the surrounding environment, and costs were reduced and construction economic benefits were improved through reasonable design and construction process.

[0146] 5. In summary, this technical solution not only has significant social benefits (such as reducing traffic impact and ensuring the safety of road users), but also reflects the engineering benefits brought about by technological innovation (such as improving construction efficiency and ensuring project quality), providing new solutions and technical support for the field of highway reconstruction and expansion.

[0147] The parts not described in detail in this application are prior art, and therefore are not described in detail in this application.

[0148] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0149] Although this article extensively uses the following components: 1. Roadbed step; 2. Original roadbed; 3. Pile hole; 4. Diagonal brace; 5. Blind drain drainage channel; 6. Semi-circular bracket; 7. Steel pipe pile; 8. Inverted U-shaped fastener; 9. Telescopic strut; 10. Telescopic jack; 11. Precast baffle; 12. Cable; 13. Lifting column; 14. Adjusting jack; 15. Support base; 16. Inverted L-shaped drainage pipe; 17. Standardized cantilever slab; 18. Fixing bolt; 19. Guardrail handrail; 20. Guardrail; 21. Drainage channel; 22. Guardrail base; 23. Anchor cable; 24. Precast protective panel; 25. Precast assembled foundation slab; 6. Support. The terms used include 26. trench, 27. steel frame, 28. cast-in-place pile, 29. foamed concrete embankment, 30. gabion, 31. pre-reserved hole for standardized cantilever slab, 32. water pipe hole for drainage channel, 33. pre-reserved hole for protective panel, 34. pre-reserved hole for foundation slab, 35. reinforcing bar, 36. pre-reserved hole for reinforcing bar, 37. horizontal hole in original roadbed, 38. vertical hole in original roadbed, 39. horizontal pipe, 40. vertical pipe, 41. steel pipe pile insertion hole, 42. integrated blind pipe drainage system, 43. longitudinal long pipe, 44. transverse pipe, and 45. standardized auxiliary installation bracket, etc., but the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this application; interpreting them as any additional limitation would be contrary to the spirit of this application.

[0150] This application is not limited to the above-described preferred embodiments. Anyone can derive other products in various forms under the guidance of this application. However, regardless of any changes made to their shape or structure, any technical solution that is the same as or similar to that of this application falls within the protection scope of this application.

Claims

1. A construction method for raising and widening embankment of highway reconstruction and extension without interrupting traffic by using foam concrete, characterized in that, Includes the following steps: S00, Component Customization and Traffic Diversion: Custom-made prefabricated foundation slabs (25), prefabricated protective panels (24), horizontal pipes (39), vertical pipes (40), longitudinal long pipes (43), prefabricated baffles (11) with clips, and transverse pipes (44) were manufactured in the factory; at the same time, half-width traffic diversion construction was carried out at the central median of the original roadbed (2); S10, steel pipe pile (7) pilot hole: Piling holes (3) are constructed on the top of the original roadbed (2) at the central median. S20, Steel Pipe Pile (7) Construction: Using a crane, the steel pipe piles (7) are hoisted into the pile hole (3) in sequence. At the same time, the inclined bracing (4) is constructed on the outside of the steel pipe piles (7) so that the bottom of the inclined bracing (4) is supported on the original roadbed (2). S30, Standardized auxiliary installation bracket (45) construction: A standardized auxiliary installation bracket (45) is assembled on the top of the original roadbed (2) on the construction side. The standardized auxiliary installation bracket (45) is used to assist in the installation of the precast baffle (11). S40, Construction of precast baffle (11): The precast baffle (11) is hoisted onto the inner side of the steel pipe pile (7) using a crane. Then, the precast baffle (11) is stabilized using the inverted U-shaped fastener (8) on the outer side of the precast baffle (11). Then, a cable (12) is installed on the inner side of the precast baffle (11), and the other end of the cable (12) is anchored in the original roadbed (2). S50, Construction of Integrated Blind Pipe Drainage System (42): An integrated blind pipe drainage system (42) is installed at the roadbed step (1); S60, Construction of prefabricated assembled foundation slab (25): Insert the reinforcing bars (35) of the prefabricated protective panel (24) into the reinforcing bar reserved holes (36) on the outer side of the bottom of the roadbed step (1); When the original roadbed (2) at the splicing point is under construction near water, a steel frame (27) is constructed on the outer side of the prefabricated assembled foundation slab (25), and gabion stone cages (30) are placed in the support groove (26) of the steel frame (27); The prefabricated protective panel (24) and the prefabricated assembled foundation plate (25) are respectively provided with a protective panel reserved hole (33) and a foundation plate reserved hole (34) on their bottom sides. S70, Construction of precast protective panels (24): Precast protective panels (24) are constructed on the outer side of the precast assembled foundation slab (25), and anchor cables (23) are constructed on the inner side of the precast protective panels (24). The other end of the anchor cables (23) is anchored to the original roadbed (2). S80, Foamed Concrete Embankment (29) Widening and Filling Construction: Foamed concrete embankment (29) is constructed on the original roadbed (2) between the precast protective panel (24) and the precast baffle (11). Construction of S90, standardized cantilever slab (17): The steel pipe pile (7) is passed through the steel pipe pile insertion hole (41) at the top of the fixed cantilever plate (17) and secured with fixing bolts (18); at the same time, the bottom of the inverted L-shaped drainage pipe (16) is inserted into the blind ditch drainage guide channel (5); The fixed cantilever plate (17) is provided with a drainage groove (21) at its edge, and a drainage groove water pipe hole (32) is provided at the bottom of the drainage groove (21). S100, guardrail (20) construction: Install guardrail base (22) on top of the standardized cantilever slab (17), and then construct the guardrail (20); S110, roadbed widening construction on the other side: Traffic was diverted to the widened foamed concrete embankment (29), and then steps S50-S100 were repeated to widen the roadbed on the other side.

2. The method for constructing a highway reconstruction and expansion embankment using foamed concrete without interrupting traffic, as described in claim 1, is characterized in that... In step S30, the support base (15) is placed in the designated position, and then the telescopic support rod (9) is installed on the top of the lifting column (13), and the inverted U-shaped fastener (8) is installed at the end of the telescopic support rod (9). The support base (15) is provided with an adjustment jack (14) at the top, a lifting column (13) at the top of the adjustment jack (14), a telescopic jack (10) at the top side of the lifting column (13), a telescopic support rod (9) connected to the telescopic support rod (9), and the end of the telescopic support rod (9) is connected to the inner side of the inverted U-shaped fastener (8).

3. The method for constructing a highway reconstruction and expansion embankment using foamed concrete without interrupting traffic, as described in claim 1, is characterized in that... In step S40, the semi-circular clip (6) is clipped onto the side of the steel pipe pile (7), the telescopic jack (10) and the adjusting jack (14) are started to adjust the inverted U-shaped fastener (8) to a suitable position, and then the inverted U-shaped fastener (8) is clipped onto the top of the precast baffle (11), and then the cable (12) is constructed on the outer side of the precast baffle (11).

4. The method for constructing a highway reconstruction and expansion embankment using foamed concrete without interrupting traffic, as described in claim 1, is characterized in that... In step S50, the horizontal pipe (44) is connected to the center of the side of the horizontal pipe (39) in sequence, one end of the horizontal pipe (39) is connected to the center of the side of the vertical pipe (40), one end of the horizontal pipe (39) is connected to the end of the vertical pipe (40), and the end of the longitudinal long pipe (43) is connected to the end of the outermost vertical pipe (40). At the same time, the longitudinal long pipe (43) is passed through the reserved hole (33) of the protective panel and the reserved hole (34) of the foundation plate in sequence.

5. The method for constructing a highway reconstruction and expansion embankment using foamed concrete without interrupting traffic, as described in claim 4, is characterized in that... The roadbed step (1) is provided with a horizontal hole (37) and a vertical hole (38) of the original roadbed in sequence below it. The horizontal pipe (39) and the vertical pipe (40) are respectively installed in the horizontal hole (37) and the vertical hole (38) of the original roadbed.

6. The method for constructing a highway reconstruction and expansion embankment using foamed concrete without interrupting traffic, as described in claim 1, is characterized in that... When the original roadbed (2) encounters a river, a steel frame (27) is provided on the outer side of the prefabricated assembled foundation plate (25), a support groove (26) is provided on the top of the steel frame (27), a cast-in-place pile (28) is provided at the bottom of the steel frame (27), and a gabion (30) is placed in the support groove (26).

7. The method for constructing a highway reconstruction and expansion embankment using foamed concrete without interrupting traffic, as described in claim 1, is characterized in that... The fixed cantilever plate (17) is provided with a fixed cantilever plate reserved hole (31), and the inverted L-shaped drainage pipe (16) is installed in the fixed cantilever plate reserved hole (31). The top of the fixed cantilever plate reserved hole (31) is connected to the water pipe hole (32) of the diversion channel, and the bottom of the inverted L-shaped drainage pipe (16) is located in the blind ditch drainage guide channel (5).

8. The method for constructing a non-disruptive embankment using foamed concrete for highway reconstruction and widening according to any one of claims 1-7, characterized in that, The guardrail (20) has a guardrail base (22) below it and a guardrail handrail (19) at the top of it. The guardrail base (22) is located above the fixed cantilever slab (17).

9. Highway reconstruction and expansion without interrupting traffic: Foamed concrete is used to raise and widen the embankment, characterized by... The embankment was constructed using the method described in any one of claims 1-8 for raising and widening the embankment with foamed concrete to ensure uninterrupted traffic during highway reconstruction and expansion.

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